<template>
	<div class="app-container">
		<!-- 顶部header区域 -->
		<mt-header fixed title="我的第一个Vue项目">
			<span  slot="left" @click="goBack" v-show="flag">
      			 <mt-button icon="back" >返回</mt-button>
  			</span>
		</mt-header>

		<!-- 中间Container -->
		<transition>
			<router-view></router-view>
		</transition>
		<!-- 底部 tarbbar 区域 -->
		<nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-1" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-1" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-1" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span id="badge" class="mui-badge">0</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-1" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
	</div>
</template>

<script>
export default {
	data() {
		return {
			flag: false
		}
	},
	created(){
		this.flag = this.$route.path === "/home" ? false : true ;
	},
	methods: {
		goBack(){
			this.$router.go(-1);
		}
	},
	watch: {
		'$route.path': function(newVal) {
			if(newVal === '/home'){
				this.flag = false
			}
			else{
				this.flag = true
			}
		}
	}

}
</script>

<style lang="scss" scoped>
.app-container{
	padding-top: 40px;
	padding-bottom: 50px;
	// 解决组件切换动画的滚动条
	overflow-x: hidden;
}

.v-enter{
	opacity: 0;
	transform: translate(100%);
	
}
.v-leave-to{
	opacity: 0;
	transform: translateX(-100%);
	// 解决组件切换时页面上漂，将离开之后的状态设为绝对定位，这就不会造成进来的页面把出去的页面挤下去的现象
	position: absolute;
}

.v-enter-active,
.v-leave-active{
	transition: all 0.8s ease;
}
.mui-bar-tab .mui-tab-item-1.mui-active {
    color: #007aff;
}
.mui-bar-tab .mui-tab-item-1 {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}
.mui-bar-tab .mui-tab-item-1 .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-1 .mui-icon ~ .mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
.mint-header{
	z-index: 99;
}
</style>